Two companies dominate the global eyewear industry - and now they are merging into a glasses behemoth. What does it mean for the bespectacled public?

Manuela Saragosa investigates the story behind these two anonymous giants - Italian fashion frames designer Luxottica, and French lens-maker Essilor - with the help of American eyewear retail pioneer E Dean Martin, and Gordon Ilett of the UK's Association of Optometrists. And she asks the European Commission why they were happy to wave through their merger earlier this year. Producer: Laurence Knight.

Producer: Laurence Knight

(Picture: Glasses model frames - black silhouettes isolated on white; Credit: Alxyzt/Getty Images)